Looking further at HHH-11081 Closed , that is a different (seemingly similar, but different) issue and the fix for that issue does not touch upon the problem at the root of this issue (which is that joins on treated roots do not get rendered because the treated roots get 'lost').

So, just to be clear , this issue is still very much open on master. https://github.com/hibernate/hibernate-orm/pull/1725 would fix it.